SignalIntegrity open-source software provides free tools for solving real-time signal integrity problems.

Provides extra analysis capabilities to WavePulser 40iX high-speed interconnect analyzer, a measurement tool for high-speed hardware designers and test engineers. Combination of S-parameters and impedance profiles with a deep toolbox provides characterization insight of high-speed interconnects. Can be used for linear circuit and system simulation solving for interconnected circuits and S-parameter blocks, de-embedding, virtual probing and viewing S-parameter files.

Teledyne LeCroy
https://pypi.org/project/SignalIntegrity/